I recently started a project and the bill was way higher than expected. Why is "FinOps" or cost optimization so difficult to get right in <cloud computing>? Is there a specific strategy to keep track of spending before it gets out of hand for a new learner?
3 answers
Cost management is difficult because <cloud computing> offers "infinite" scalability, which is a double-edged sword. It’s very easy to spin up a high-end instance for testing and forget to shut it down, leading to a massive bill at the end of the month. Unlike traditional CapEx where you buy a server once, the OpEx model of the cloud requires constant monitoring. You have to learn how to set up billing alarms and budget actions immediately. It’s a specialized skill that combines finance with engineering, and most technical people find that transition quite boring but necessary.
Are you finding that the pricing calculators provided by <cloud computing> vendors are actually accurate, or do they leave out hidden data egress fees?
I think the hardest part is understanding "Serverless" pricing. You pay per execution, and if your code loops, your <cloud computing> bill will explode.
That happened to me! A simple recursive function cost me 50 dollars in an hour. Monitoring is definitely the most vital part of the learning process.
Ronald, the calculators are a good start, but they almost always miss data transfer costs. Egress fees are the "silent killer" in cloud budgets. If you are moving a lot of data between regions or out to the internet, your costs will skyrocket beyond any initial estimate provided by the basic tools.